I just installed the latest version and tried to test a very simple little code snippet, and the simulator crashes completely, with a Windows "Not Responding" message, when this "PIND^=(1<<2);" is executed while stepping through.This does the same:- "PIND=PIND^0b00000100;"

Also, the simulator fails to recognise PD2, and after it tells me with a message, clicking [Edit] also crashes the simulator.(ATMega328P / UNO )